This specification, EN 14399:2005, defines the criteria for high-strength structural bolted assemblies. It covers a broad range of bolted assemblies used in civil applications. The standard establishes guidelines for the design, production, inspection, and testing of bolted assemblies to ensure their performance. It also specifies the elements that

DIN 931 outlines the standards for hex head fasteners. These fixings are commonly used in diverse applications, from automotive engineering toassembly. The DIN 931 standard covers parameters such as length and thread form. It also establishes standards for material composition and tolerances. Adhering to DIN 931 ensures durable connections and en